Using Trimble radio with TOPCON base station
I need some help getting an SNB900 Trimble radio to work with a TOPCON GR5 SS base station. I can open a serial port in my gr5 base and connect the SNB900 using Topcon Receiver Utility most equipment is utilizing topcon but I have a few Trimble controlled machines. Our Topcon radios are set to CMR+ and the Trimble machines are also set to CMR+ I open serial port change channel to same as the machines, same BR (38400), input command, output CMR+ ,turn on RTK/RTS Which I believe used to work until my data collectors firmware where updated. Now the Trimble radio will not communicate radio freq. w equipment. Any help would be appreciated.
- 3 Replies
CMR/CMR+ is a Trimble proprietary language….I would try to run them all on RTCM 3.1 or similar since it is “standard” and not brand specific.
Little info…
https://gssc.esa.int/navipedia/index.php/RTK_Standards
I believe CMR and CMR+ are no longer proprietary, only CMRx. But CMR+ can act up when mixing manufacturers and using multiple constellations.
As mentioned, RTCM 3.1 is preferable, if you have to mix receivers. Or really, anything above 2.3 since I believe that is when GLONASS support was added…
“…people will come to love their oppression, to adore the technologies that undo their capacities to think.” -Neil Postman
If your firmware has been upgraded in the last few years to 4.7, as you should have for the GPS Rollover, the Gr-5 will be able to use CMR+
This was on the firmware release notes dated Nov 2015
“?ú Support for Trimble CMR+TM message”
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